Occasional Electronic Publication No. 1 - Society for Industrial ...

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Eads, James – also see Eads & Flad
83,912 Nov. 10, 1868 *Metal arch. Expansion joint at center span. Labeled “truss bridge.”
89,745 May 4, 1869 *Metal arch. Compensating lever and thrust bars to prevent oscillations
of piers in multi-span arched bridges. Labeled “truss bridge.”
142,378 Sep. 2, 1873 *Truss carried above metal arch on posts. Labeled “bridges.”
142,379 Sep. 2, 1873 *Trussed arch. Method of erecting from piers outward. Labeled “iron
bridges.”
142,380 Sep. 2, 1873 *Construction method. Two cantilevered half-span segments built
parallel to river and swung into place. Labeled “iron bridges.”
142,381 Sep. 2, 1873 *Pair of opposite leaning lenticular trusses create a three-hinged arch
carrying a roadbed above. Labeled “iron bridge.”
142,382 Sep. 2, 1873 *Foundation for arch bridge.
144,519 Nov. 11, 1873 *Heel joint detail to relieve horizontal thrust on arch bridges. Labeled
“bridges.”
162,045 Apr. 13, 1875 *Hydrostatic piston in heel joint used to control horizontal movement.
Labeled “iron bridge.”
162,357 Apr. 20, 1875 *Attachment of heel joint to permit expansion and contraction. Labeled
“iron bridges.”
163,854 Jun. 1, 1875 *Metal-arch skewback anchor to lessen amount of masonry in abutment.
Labeled “metallic-arch-bridge.”
169,791 Nov. 9, 1875 *Modification of patent no. 142,381 of 1873.
Eads, James & Henry Flad
95,784 Oct. 12, 1869 *Rollers on top of pier to relieve horizontal thrust of arches on either
side. Labeled “truss bridge.”
Earle, Charles
18,196 Sep.15, 1857 *Short-span drawbridge.
Eddy, Daniel
389,694 Sep.18, 1888 *Cable-stayed bridge.
510,064 Dec. 5, 1893 Combination of several truss and suspension bridge features, as well as
a bowstring configuration. Masts at each one-fifth span point support
radiating diagonals. Picturesque fantasy of conflicting forms.
Eikenberry, Lewis
22,715 Jan. 25, 1859 Two, almost concentric, arches secured to a truss-like web of verticals
and quadruple intersecting diagonals. No horizontal chords. Labeled
“truss bridge.”
31,157 Jan. 22, 1861 Half-span diagonal struts secured at center span to a truss-like web of
verticals and quadruple intersecting diagonals. No chords or horizontal
ties. Labeled “truss bridge.”
Ensign, Samuel
96,569 Nov. 9, 1869 Chords are trussed beams. Web consists of crossed diagonals and
verticals that do not intersect the chords at common points.
Evans, James
144,751, Nov. 18, 1873 *Tied arch. Supported on raised metal abutments. Web contains only
verticals to support roadbed. Sheathed-wire tie.
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